txtai vs 
Promptfoo
txtai vs Promptfoo compared for 2026 — features, license, ease of use, performance and which one to choose. All-in-one embeddings database vs Unit tests for your prompts.
Updated regularly · curated by OpenSourceAI.tech
txtai vs Promptfoo at a glance
| Spec | txtai | Promptfoo |
|---|---|---|
| Category | LLM / RAG framework | LLM / RAG framework |
| Type | Embeddings / RAG framework | Prompt testing |
| License | Apache-2.0 | MIT |
| Runs locally | Self-hosted | Yes |
| Primary language | Python | TypeScript |
| Ease of use | Intermediate | Beginner |
| Best for | semantic search and RAG in one tool | teams shipping prompts to production |
| GitHub stars | 12.7k | 23.3k |
How txtai and Promptfoo score
| Criterion | txtai | Promptfoo |
|---|---|---|
| Popularity | 3.0 | 3.5 |
| Maintenance | 5.0 | 5.0 |
| Ease of use | 3.5 | 5.0 |
| Privacy | 4.5 | 5.0 |
| License freedom | 5.0 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
txtai
txtai is an all-in-one embeddings database for semantic search, LLM orchestration and RAG, bundling vector indexing, pipelines and workflows in one package.
- Vector search, pipelines and workflows together
- Runs fully locally
- Minimal dependencies
Promptfoo
Promptfoo runs your prompts against test cases across models, catching regressions before they reach production, and includes red-teaming checks.
- Regression tests for prompts
- Compares models side by side
- Built-in security red-teaming
Key differences
txtai is embeddings / RAG framework, while Promptfoo is prompt testing. Their licenses differ (Apache-2.0 vs MIT), which matters if you ship a commercial product. txtai leans more intermediate-friendly, whereas Promptfoo is more suited to beginner users. They also differ in how they run (Self-hosted vs Yes). In short, txtai fits semantic search and RAG in one tool, and Promptfoo fits teams shipping prompts to production.
Which should you choose?
Choose txtai for semantic search and RAG in one tool. Choose Promptfoo for teams shipping prompts to production.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is txtai or Promptfoo easier to use?
Promptfoo is generally the easier of the two to get started with, while txtai rewards more setup with more control.
Are txtai and Promptfoo free?
txtai is free and open source (Apache-2.0), and Promptfoo is free and open source (MIT). Neither charges for the core software.
Can I run txtai and Promptfoo locally?
txtai: self-hosted · Promptfoo: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
txtai vs Promptfoo — which should I pick in 2026?
Choose txtai for semantic search and RAG in one tool. Choose Promptfoo for teams shipping prompts to production.
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